tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts.
stable inclusion from stable-v4.19.254 commit f4b0295be9a3c4260de4585fac4062e602a88ac7 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5Q0SQ CVE: NA -------------------------------- [ Upstream commit 7c6f2a86ca590d5187a073d987e9599985fb1c7c ] While reading sysctl_tcp_thin_linear_timeouts, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 36e31b0a ("net: TCP thin linear timeouts") Signed-off-by:Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Yongqiang Liu <liuyongqiang13@huawei.com>
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